import pytest
from rest_framework.exceptions import ValidationError

from accounts.models import User
from content.models import ContentInteraction, ContentItem, VideoProgress
from content.services import complete_video
from progression.models import RewardTransaction, UserAbility


@pytest.mark.django_db
def test_complete_video_重复提交只发放一次能力碎片():
    user = User.objects.create_user(
        username="video_user",
        password="StrongPass_2026",
        nickname="视频用户",
    )
    video = ContentItem.objects.create(
        slug="video-modeling",
        title="建模视频",
        kind=ContentItem.Kind.VIDEO,
        ability_dimension=ContentItem.Ability.MODELING,
        duration_seconds=360,
        is_published=True,
    )

    first, first_reward = complete_video(user, video)
    second, second_reward = complete_video(user, video)

    ability = UserAbility.objects.get(
        user=user,
        dimension=UserAbility.Dimension.MODELING,
    )
    assert first.completed is True
    assert second.reward_granted is True
    assert first_reward == {"ability": "modeling", "fragments": 1}
    assert second_reward is None
    assert ability.fragments == 1
    assert RewardTransaction.objects.filter(user=user).count() == 1
    assert VideoProgress.objects.filter(user=user, content=video).count() == 1
    assert ContentInteraction.objects.filter(
        user=user,
        content=video,
        action=ContentInteraction.Action.COMPLETE,
    ).count() == 1


@pytest.mark.django_db
def test_complete_video_非视频内容拒绝完成():
    user = User.objects.create_user(
        username="knowledge_user",
        password="StrongPass_2026",
        nickname="知识用户",
    )
    content = ContentItem.objects.create(
        slug="knowledge-item",
        title="知识卡片",
        kind=ContentItem.Kind.KNOWLEDGE,
        is_published=True,
    )

    with pytest.raises(ValidationError, match="只有视频"):
        complete_video(user, content)

    assert RewardTransaction.objects.count() == 0